Safety-guard for machines



W.A.W1ES1V|AN. SAFETY GUARD FOR MACHINES.

' APPLICAT1ON FILED 1ULY25. 1919. 1,329,564

Patented Feb. 3,1921).

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W. A. WIESMAN.

SAFETY GUARD FOR MACHINES.

APPLICATION FILED IuLYzs. 1919.

1,329,564. Peeented Feb. 3,1920.

` w. A. w|EsMAN. SAFETY GUARD FOR MACHINES.

APPLICATION FILED 1ULY25. 1919.

1,329,564. Patented Feb. 3,1920.

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UNITED STATES PATENT OFFICE.

WILLIAM A. WIESMAN, 0F GRAND RAPIDS', MICHIGAN, ASSIGNOR OF ONE-HALF T0 KEELER BRASS COMPANY, OF GRAND RAPIDS, MICHIGAN.

Specification of Letters Patent.

SAFETY-GUARD FOR MACHINES.

Patented Feb. 3, 1920.

Application led July 25, 1919. Serial No. 313,286.

To all whom t may concern:

Be it known that I, VELIAM A. Wins- MAN, a citizen of the United States, residing at Grand Rapids, county of Kent, State of Michigan, have invented certain new and useful Improvements in Safety-Guards for Machines, of which the following is a speciiication.

This invention relates to improvements in safety guards for machines.

My improvements relate particularly to safety guards for machines of the type shown in U. S. Letters Patent, No. 1265019, dated May 7 1918, this applicant being one of the patentees thereof, the present invention being an improvement upon the structure there shown.

The main objects of this invention are:

First, to provide a guard for punch presses and like machines having an actuated member such as a reciprocating die head which is readily adapted to different makes of machines and adapted to be mounted thereon as an attachment.

Second, to provide a guard for structures of the class described which is adjustable to accommodate different sizes and makes of machines and different working conditions. v

Third, to provide a guard for machines of the class described which is comparatively simple and economical in structure and readily applied to or installed upon the machines. v

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the obj ects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out inv the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing forming a part of this specification, in which:

Figure I is a front perspective view of a punch press equipped with my improved guard, the punch press being shown mainly inv conventional form.

Fig. II is a detail front elevation of the rocker member and its supporting bracket removed from the machine.

Fig. IIIvis a view of the rocker member and its Vsupporting bracket from the left of Fig. II.

Fig. IV is a detail view partially in section on line 4.-11 of Fig. II showing details of mounting for rocker member.

Fig. V is a side elevation of the pitman and the rocker member actuating pin mounted thereon, the crank shaft and rocker member shown in vertical sections.

Fig. VI is a detail perspective view of a modification of my improvements showing another adaptation to another form of punch press.

In the drawing similar reference characters refer to similar parts throughout vthe several views, andthe sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing 1 indicates a punch press generally which is shown mainly in conventional form. The actuated member 2 is connected to the crank shaft 3 by the pitman 4. The details of these parts and of. the driving means for the crank shaft form no part of my invention and further description, therefore, seems to be unnecessary, only suiiicient parts of a punch press being shown as is deemednecessary to show an adaptation of my improvements. j

The guard 5 is mounted so as to sweep across the bed 6 in front of the actuated member and sweep or carry the hands of the voperator away from the danger zone. The guard is actuated from the crank shaft so that its movement is properly timed with the stroke thereof. In these yrespects it is in general the same as the structure of the patent referred to.

The pivot 7 for the rocker member 8 which carries the guard 5 is carried by the bracket member 9 supported by the ybracket arms 10 bolted to the front of the machine. The bracket member 9 is adjustably supported on these arms 10 by means of set screws 11, the adjustment being longitudinal or in a plane parallel to the crank shaft in the embodiment shown in Fig. I and transversely thereto in the embodiment shown in Fig. VI.

The supporting bracket has an upwardly projecting arm 12 longitudinally slotted at 13 to receive the pivot 7. The sides of the arm 12 are serrated to coact with the serrated clamping members 14 so that the pivot is securely retained in its adjusted position.

The guard V5 is, inthe structure illustrated, formed of a rod and is adjustably secured to the rocker member by means of set screws 15. rIhese adjustments accommodate different sizes and makes of machines within a considerable range or scope and also, the throw of the guard may be largely determined.

To actuate the guard, an actuating pin 16 is mounted on the head of the pitman by means of the clips 17 to project forwardly therefrom. rI`he pin 16 is'operatively connected to the rocker 8 by means of the slide coupling 18, the pin being slidably associated with the coupling, the coupling being also movably mounted on the rocker member to permit movement of these parts without binding.

In the modification shown in Fig. VI, I show my improvements adapted to another type of press in which the crank shaft is disposed from front tothe rear. In this modification or adaptation, the rocker mem. ber 19 is in the form of a flat bar with a series of holes 20 either of which may be engaged on the pivot 7. The supporting bracket is substantially the same as that described. The rocker member is provided with a rearwardly extending pin 21 disposed transversely tothe actuating pin 16 on the pitman, the coupling slide 18 being substantially the same in form and function as in the embodiment shown in Fig. I.

This arrangement of parts enables the ready mounting and adaptation of my improvements to meet the varying conditions in practice, such as different makes of machines, different sizes and the like.

I lhave shown such embodiments and adaptations as I believe will enable those skilled in the art to which my invention relates to embody or adapt my improvements as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. The combination with a machine, including a frame, an actuated member, a crank shaft and a connecting pitman therefor, of a bracket member mounted on said frame for horizontal adjustment and having a vertically slotted arm, a rocker member, a pivot therefor disposed in said slot in said bracket arm and provided with arm engaging clamps whereby said pivot is supported for vertical adjustment, a guard mounted on said rocker member for longitudinal adjustment thereon, and a pin on said pitman, operatively associated with said rocker member.

2. The combination with a machine, in-l cluding a frame, an actuated member, a crank shaft and a connecting pitman therefor, of a bracket member having a vertically slotted arm, a rocker member, a pivot therefor disposed in said slot in said bracket arm and provided with arm engaging clamps whereby said pivot is supported for vertical adjustment, a guard mounted on said rocker member, and a pin on said pitman, operatively associated with said rocker member.

3. The combination with a machine, including a frame, an actuated member, a crank shaft and a connecting pitman therefor, of a bracket member mounted on said frame for horizontal adjustment, a rocker member, a pivot therefor mounted on said bracket, a guard mounted on said rocker member, a pin on said pitman member and a coupling slide for said pin and rocker member.

1. The combination with a machine, including a frame, an actuated member, a crank shaft and a connecting pitman therefor, of a bracket member, a rocker member, a pivot therefor mounted on said bracket, a guard mounted on said rocker member, a pin on said pitman member and a coupling member slidably associated with both said pin and rocker member.

5. The combination with a machine, lncluding a frame, an actuated member, a crank shaft and a connecting pitman therefor, of a bracket member, arocker member, a pivot therefor mounted on said bracket for vertical adjustment, a guard mounted on said rocker member for longitudinal adjustment thereon, a pin on said pitman member and a coupling slide for said pin and rocker member.

6. rIhe combination with a machine, including a frame, an actuated member, a crank shaft and a connecting pitman therefor, of a bracket member mounted on said frame for horizontal adjustment, a rocker member, a pivot therefor mounted on said bracket for vertical adjustment, a guard mounted on said rocker member for longitudinal adjustment thereon, and a pin on said pitman member operatively associated with said rocker member.

7. The combination with a machine, including a frame, an actuated member, a crank shaft and a connecting pitman therefor, of a bracket member mounted on said frame for horizontal adjustment, a rocker member, a pivot therefor mounted on said bracket for vertical adjustment, a guard mounted on said rocker'member and a pin on said pitman member operatively associated with said rocker member.

8. The combination with a machine, including a frame, an actuated member, a crankshaft, and a connecting pitman therefor, of a rocker member, a pivot thereformounted for adjustment, a guard mounted on said rocker member, a pin on said pitman member and a ycoupling member slidably asociated With both said pin and rocker mem- 9. The combination With a machine, including a frame, an lactuated member, a crank shaft and a connecting pitman therefor, of a pivoted rocker member, a guard mounted on said rocker member, a pm on said pitman member disposed transversely of said rocker member, and a coupling member slidably associated With both said pin and rocker member.

l0. The combination With a machine, includmg a frame,

an actuated member, a

crank shaft and a connecting pitman therefor, of a pivoted rocker member, a guard 15 In Witness whereof, I have hereunto set 20 my hand and Seal in the presence of two Witnesses.

WILLIAM A. WIESMAN. [n s] Witnesses:

ELIZABETH START, DORA L. ZANDSTRA. 

